公开(公告)号：US20040248602A1

公开(公告)日：2004-12-09

申请号：US10772644

申请日：2004-02-05

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz ,  Philip J. Pietraski ,  Louis J. Guccione ,  Prabhakar R. Chitrapu

IPC: H04B015/00

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70755 ,  H04B1/709 ,  H04B2201/70701 ,  H04W48/16 ,  H04W56/00

Abstract: A method and system for performing initial cell search is disclosed. Step 1 processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 processing is performed to obtain the toffset and code group. Step 3 processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.

Abstract translation: 公开了一种用于执行初始小区搜索的方法和系统。 执行步骤1处理以检测峰值主同步码（PSC）位置（即码片偏移或码片位置）。 执行步骤2处理以获得折射和代码组。 执行步骤3处理以识别执行初始小区搜索的WTRU可与其同步的基站的中间码。

公开(公告)号：US20030185178A1

公开(公告)日：2003-10-02

申请号：US10329033

申请日：2002-12-23

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Narayan Parappil Menon ,  Fatih M. Ozluturk ,  Brian Gregory Kiernan

IPC: H04B007/216 ,  H04L012/28

CPC classification number: H04L12/4633 ,  H04L12/5692 ,  H04L12/66 ,  H04L63/0892 ,  H04L2012/6481 ,  H04W12/06 ,  H04W40/02 ,  H04W80/04 ,  H04W84/042 ,  H04W88/005 ,  H04W88/085 ,  H04W88/16 ,  H04W92/04 ,  H04W92/14 ,  Y10S370/913

Abstract: The present invention provides for a Time Division Duplex-Radio Local Area Network (TDD-RLAN) which includes a Radio Access Network Internet Protocol (RAN IP) gateway that enables connectivity to the public Internet. The system may serve as a stand-alone system or be incorporated into a UMTS used with conventional Core Network, particularly for tracking and implementing AAA functions in the Core Network.

公开(公告)号：US20030031162A1

公开(公告)日：2003-02-13

申请号：US09998885

申请日：2001-10-31

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Louis J. Guccione ,  Andrew F. Bednarz

IPC: H04J003/06

CPC classification number: H04B1/70735 ,  H04B1/7083

Abstract: The system and method of the present invention establishes a communication link between a user equipment (UE) and a base station in a communication system having a plurality of base stations which each transmit a common primary synchronization code (PSC) in a primary synchronization channel in conjunction with a base station specific secondary synchronization code (SSC) within a system frame, which receives with the UE an input signal including the PSC and SSC from at least one of the base stations. The UE analyzes the input signal to detect any received PSCs within a selected time period which has duration corresponding to the length of a system frame and determining a relative location of a strongest PSC within the selected time period. The input signal is then processed to remove the PSC from at least the determined PSC location. A secondary synchronization code (SSC) is then detected for the determined location from the processed signal. The communication link is then established using the detected SSCs.

Abstract translation: 本发明的系统和方法在具有多个基站的通信系统中建立用户设备（UE）和基站之间的通信链路，每个基站在主同步信道中发送公共主同步码（PSC） 与系统帧内的基站专用辅同步码（SSC）结合，其从UE接收来自至少一个基站的包括PSC和SSC的输入信号。 UE分析输入信号以检测在所选择的时间段内的任何接收到的PSC，其具有对应于系统帧的长度的持续时间并且确定所选择的时间段内最强PSC的相对位置。 然后处理输入信号以从至少所确定的PSC位置移除PSC。 然后从处理的信号中检测出确定位置的次同步码（SSC）。 然后使用检测到的SSCs建立通信链路。

公开(公告)号：US20020154638A1

公开(公告)日：2002-10-24

申请号：US10078946

申请日：2002-02-20

Applicant: InterDigital Technology Corporation

Inventor： Sharif M. Shahrier ,  Prabhakar R. Chitrapu

IPC: H04L012/28

CPC classification number: H04W36/0083 ,  C07C43/313 ,  C07C69/63 ,  C07D307/79 ,  H04L29/06 ,  H04L29/12009 ,  H04L29/1233 ,  H04L29/12367 ,  H04L29/12424 ,  H04L29/12462 ,  H04L45/26 ,  H04L61/25 ,  H04L61/2514 ,  H04L61/2535 ,  H04L61/255 ,  H04W8/04 ,  H04W8/082 ,  H04W8/26 ,  H04W40/36 ,  H04W80/04 ,  H04W84/105 ,  H04W88/005

Abstract: A system and method for supporting mobile Internet communication is provided which employs a plurality of Routers and a plurality of Mobile Nodes (MNs). Each Router has a unique communication address. Each MN is associated with a home Router. Each Router has an associated Mobile Node Location List identifying each MN for which the Router is the home Router and the communication address of a Router corresponding to a current location of each such MN. Each MN is movable from an old location where the MN communicates with the Internet via one Router to a current location where the MN communicates with the Internet via a different Router. Communication at the current location via the different Router is established by communicating to the MN's home Router the communication address of the different Router as the communication address corresponding to the MN's current location. Accordingly, a data communication from a corresponding node (CN) to a selected MN is communicated to the selected MN by accessing the Mobile Node Location List of the selected MN's home Router to determine the communication address corresponding to the selected MN's current location and directing the data communication to that determined communication address.

Abstract translation: 提供一种用于支持移动因特网通信的系统和方法，其采用多个路由器和多个移动节点（MN）。 每个路由器都有一个独特的通讯地址。 每个MN与归属路由器相关联。 每个路由器具有相关联的移动节点位置列表，其标识路由器是家庭路由器的每个MN，以及对应于每个这样的MN的当前位置的路由器的通信地址。 每个MN可以从MN通过一个路由器与因特网通信的旧位置移动到MN通过不同路由器与因特网通信的当前位置。 通过与MN的归属路由器通信，将不同路由器的通信地址作为与MN当前位置对应的通信地址进行通信，建立通过不同路由器在当前位置的通信。 因此，通过访问所选MN的归属路由器的移动节点位置列表来确定与所选择的MN的当前位置相对应的通信地址，并将所指示的MN的当前位置的通信地址指向 数据通信到确定的通信地址。

公开(公告)号：US20040127214A1

公开(公告)日：2004-07-01

申请号：US10675893

申请日：2003-09-29

Applicant: InterDigital Technology Corporation

Inventor： Gautam G. Reddy ,  Prabhakar R. Chitrapu ,  Leonid Kazakevich ,  Teresa Joanne Hunkeler ,  Arty Chandra

IPC: H04Q007/20 ,  H04M001/00 ,  H04B001/38

CPC classification number: H04W88/04 ,  G01S5/0027 ,  H04W4/02 ,  H04W64/00 ,  H04W84/00 ,  H04W88/06

Abstract: A wireless network provides controlled wireless communications with multi-mode wireless WTRUs. The wireless network has at least one base station having a transceiver operating in an infrastructure communication mode with multi mode WTRUs and a controller that transmits control signals via infrastructure communications with a WTRU that control peer-to-peer mode communications of that WTRU with other WTRUs. A WTRU has transceiver components configured for selective operation in an infrastructure communication mode with a network base station and in a peer-to-peer communication mode with other WTRUs. The WTRU also has a transceiver controller configured to selectively control peer-to-peer mode communications with other WTRUs based on communication signals received in infrastructure communications with a network base station. Preferably, the transceiver controller is configured to control the transceiver components to switch between infrastructure communication mode and peer-to-peer communication mode based on Quality of Service criteria.

Abstract translation: 无线网络提供与多模式无线WTRU的受控无线通信。 无线网络具有至少一个基站，其具有在具有多模式WTRU的基础设施通信模式中工作的收发器，以及控制器，其经由与WTRU的基础设施通信来发送控制信号，该WTRU控制该WTRU与其他WTRU的对等模式通信 。 WTRU具有被配置为在与基站通信模式中的选择性操作并且与其他WTRU的对等通信模式中的选择性操作的收发器组件。 WTRU还具有收发器控制器，其被配置为基于在与基站通信的基础设施通信中接收的通信信号来选择性地控制与其他WTRU的对等模式通信。 优选地，收发器控制器被配置为基于服务质量标准来控制收发器组件在基础设施通信模式和对等通信模式之间切换。

公开(公告)号：US20040092265A1

公开(公告)日：2004-05-13

申请号：US10447891

申请日：2003-05-29

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Steven Jeffrey Goldberg

IPC: H04Q007/20

CPC classification number: H04W36/24 ,  H04W36/04 ,  H04W36/14 ,  H04W84/10 ,  H04W84/22 ,  H04W88/16

Abstract: Method and apparatus for facilitating high level handoff decisions performed by a gateway device of a personal area network (PAN) which examines criteria regarding both the devices making up the PAN as well as the enterprise networks which are the subject of the potential handoff.

Abstract translation: 用于促进由个人区域网络（PAN）的网关设备执行的高级切换决策的方法和装置，其检查构成PAN的设备以及作为潜在切换对象的企业网络的标准。

公开(公告)号：US20040001457A1

公开(公告)日：2004-01-01

申请号：US10334190

申请日：2002-12-30

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu

IPC: H04Q007/24

CPC classification number: H04L63/104 ,  H04L63/20 ,  H04W4/06 ,  H04W8/22 ,  H04W12/06 ,  H04W28/06 ,  H04W92/18

Abstract: A system for supporting security and mobility management of wireless communications to multiple wireless transmit/receive units (WTRUs) includes a first database having a listing of each of the WTRUs along with their capabilities, and a second database having a listing of the location of each of the WTRUs. The second database has at least one subgroup which corresponds to at least two WTRUs which are co-located. The WTRUs in the subgroup are treated as a single WTRU for security and mobility management.

Abstract translation: 用于支持对多个无线发射/接收单元（WTRU）的无线通信的安全性和移动性管理的系统包括具有每个WTRU的列表及其能力的第一数据库，以及具有每个 的WTRU。 第二数据库具有至少一个对应于至少两个共同定位的WTRU的子组。 子组中的WTRU被视为用于安全和移动性管理的单个WTRU。

公开(公告)号：US20030185187A1

公开(公告)日：2003-10-02

申请号：US10328791

申请日：2002-12-23

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu ,  Narayan Parappil Menon ,  Yi-Ju Chao ,  Shamim Akbar Rahman

IPC: H04Q007/24 ,  H04J003/00

CPC classification number: H04W88/005 ,  H04L12/5692 ,  H04L12/66 ,  H04L2012/6481 ,  H04W80/04 ,  H04W88/16 ,  H04W92/14

Abstract: The present invention provides for a Time Division Duplex - Radio Local Area Network (TDD-RLAN) which includes a Radio Access Network Internet Protocol (RAN IP) gateway that enables connectivity to the public Internet. The system may serve as a stand-alone system or be incorporated into a UMTS used with conventional Core Network, particularly for tracking and implementing AAA functions in the Core Network.

Abstract translation: 本发明提供了一种时分双工 - 无线局域网（TDD-RLAN），其包括能够连接到公共因特网的无线接入网络因特网协议（RAN IP）网关。 该系统可以用作独立系统或被并入到与常规核心网一起使用的UMTS中，特别是用于跟踪和实现核心网络中的AAA功能。

公开(公告)号：US20040171390A1

公开(公告)日：2004-09-02

申请号：US10791231

申请日：2004-03-02

Applicant: InterDigital Technology Corporation

Inventor： Prabhakar R. Chitrapu

IPC: H04Q007/20 ,  H04M001/00 ,  H04B001/38

CPC classification number: G01S5/0252 ,  G01S5/02 ,  G01S5/0294 ,  G01S5/14 ,  H04L67/04 ,  H04L67/16 ,  H04L67/18 ,  H04L69/329 ,  H04W16/18 ,  H04W28/26 ,  H04W48/16 ,  H04W48/20 ,  H04W64/00 ,  H04W76/10 ,  H04W88/02 ,  H04W88/08

Abstract: Classes of cognition models which may include: 1) Radio Environment models, 2) Mobility models and 3) Application/User Context models are utilized in a wireless communications network. Radio Environment models represent the physical aspects of the radio environment, such as shadowing losses, multi-path propagation, interference and noise levels, etc. Mobility models represent users motion, in terms of geo-coordinates and/or logical identifiers, such as street names etc. as well as speed of user terminal etc. The context model represents the present state and dynamics of each of these application processes within itself and between multiple application processes. These data are employed to optimize network performance.

公开(公告)号：US20040148352A1

公开(公告)日：2004-07-29

申请号：US10612156

申请日：2003-07-02

Applicant: InterDigital Technology Corporation

Inventor： Narayan Parappil Menon ,  Prabhakar R. Chitrapu

IPC: G06F015/16

CPC classification number: H04W48/10 ,  H04W28/18 ,  H04W48/14 ,  H04W48/16 ,  H04W48/18 ,  H04W76/10 ,  H04W80/00 ,  H04W80/04 ,  H04W84/12

Abstract: In a communicator network, system information is broadcast to WTRUs utilizing a higher system information such as an internet protocol (IP) layer which provides for bidirectional transmission, interrogation of the network by the WTRUs and negotiation of service level capabilities. Service level intelligence may be applied for wireless network selection and handover operations are facilitated using higher level system information. Automatic network selection is obtained using preprogrammed WTRUs or using a universal subscriber identity module.

Abstract translation: 在通信器网络中，系统信息利用诸如提供双向传输的因特网协议（IP）层，由WTRU询问网络和服务级能力的协商的较高系统信息被广播到WTRU。 服务水平智能可以应用于无线网络选择，并且使用更高级别的系统信息来促进切换操作。 使用预编程的WTRU或使用通用用户识别模块获得自动网络选择。